Biochemical Engineering - Fermentation Reactors

Exercise : Fermentation Reactors - Section 1
36.
Unsteady state mass balance for dynamic model of continuous stirred tank reactor (CSTR) is
time rate of total amount in rector = rate of addition to reactor -rate of removal + rate of formation
total amount in rector = rate of addition to reactor - rate of removal + rate of formation
rate of total amount in rector = rate of addition to reactor - rate of removal + rate of formation
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
A fed-batch reactor initially contains 2 litre of medium. If it was fed at 1 litre per hour, then after 10 hours, the volume of the reactor will be
1 litre
2 litre
3 litre
13 litre
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
A Bacillus sp. produces an antibiotic only during the stationary phase when grown in a batch culture. If grown in a 5 litre continuous culture, the steady state productivity of the antibiotic
will increase until the culture washes out
will decrease after washout
will be zero
will be infinite
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
In a fluidized bed reactor, the function of the disengagement zone is to
reduce loss of particles from the reactor
reduce the velocity of the particles near the surface of the reactor
reduce foaming problems
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
Saccharomyces cerevisiae produces high biomass yields at low glucose concentrations and high dissolved oxygen concentrations. Which of the following should be followed for maximizing its biomass productivity?
Batch fermenter with a high initial glucose concentration
Continuous fermenter with a low initial glucose concentration
Fed batch fermenter
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.